Pipe-coupling.



' no'. '692,651. Patenfedreb. 4,1902;

.L E.V Fonsvrn. PIPE GOUPLING.

(Application led Max. 23, 1901 (No Model.)

UNITED STATES PATENT FFICE.' .y

JOSEPH E. FORSYTH, OF CHICAGO, ILLINOIS.l

PIPE-COUPLING.

srncrrrcATroN forming part ef Lettere :Patent No. 692,651, aereaFebruary 4, 1902'.

Application filed March 23,1901. Serial No. 52,590. (No model.) v

T0 @ZZ wiz/0m t may concern:

Be it known" that LJ osEPn E. FoRsYTH, a citizen of the United States,residing at Chicago, inthe county of Cook` and State of Illinois, haveinvented a new and useful Pipe- Coupling, of which the following is aspeciti-4 cation. j

My invention relates particularly to pipecouplings for use ontrain-pipes; and my primary object is to provide an improved elbowhaving a rotatable or swiveled pipesection connected therewith, the samebeing peculiarly applicable to use on train-pipes near the point ofconnection between the trainpipes of different cars.

My invention is shown in its preferred form in the accompanyingdrawings, in Whichl Figure l is a perspective view showing two of theimproved elbow-couplings applied to one end of the train-pipe of a car;and Fig. 2, a broken section taken, as indicated, at line 2 of Fig. l. n

A represents one section of a train-pipe; B, another section thereof; Cand D, elbow-couplings of my improved construction, and E a pipe-sectionconnecting said elbow-couplings.

Each elbow-coupling comprises, preferably,4

a short elbow a, having one enlarged end cd, a pipe-section a2,extending into the enlarged end al and provided with an external rigidcollar or shoulder a3, an externally-threaded nut a4, connected with aninternal thread at the adjacent enlarged end d', and a yieldingpacking-ring a5, confined between the nut a4 and the shoulder a3. Foraccomplishing the purpose to which the coupling is here put I prefer toequip the free end of the pipe-section'a2 with an elbow b. Thecylindrical surface of the packing-ring a5 contacts with an innercylindrical surface a6, adjacent to and preferably of smaller diameterthan the in ternally-threaded portion of the end a. The shoulder ofthecollar a3 adjacent to the packing-ring is preferably sloping orbeveled, as shown. The interior extremity of the section a2 ispreferably of substantially the same diameter as the body of saidsection and its withinan inner cylindrical surface a7, adjacent to whichis a shoulder a8 for engaging the collar a3. Aspace agis preservedbetween the wrench-engaging portion of the nut and the adjacent surfaceof the end a of the elbow a. It will thusvbe seen that the nut a4 may becaused to compress the packing-ring a5 and that the nut is adjustablefor wear. It 5 5 will also be seen that the pipe-section a2 is swiveledin the adjacent end of the elbow a,

a steam or air tight joint being preserved, nevertheless.

stantially the end portion of the train-pipe with which any car isequipped, and the pipesection B may be equipped with any suitablecoupling members for coupling with the trainpipeof another car. ployedby` me the pipe-section B is equipped with an automatic coupling, and asimilar coupling member is employed on a similar pipe-section, withwhich the other car is lie substantially horizontal and parallel to theside of the car,but at a distance from the center of the car, and theconnecting-section E to lie in substantially a horizontal plane and toextend transversely of the car, it is obvious that the section E hasswivel connection with both the pipes A and B. The section A isordinarily incapable of longitudinal movement, but is allowed somelateral. movement, and

the section B, which may be supported from 8c the draw-bar of the car,is allowed a longitu- ,dinal movementto permit yielding when two carscome together. It will be observed that in the construction shown theparts of the couplings C and D are reversed, whereby the section E iscaused to lie in a lower plane than the sections A and B. This enablesfloorbeams or other obstructions to be passed.

' It is not absolutely essential that the portion of the pipe-'section Awhich is attached 9o to the elbow a shall lie exactly in a horizontalplane. Moreover, it will be understood that the elbows may be sodisposed that the pipe-section E shall swing in a vertical insteadof ahorizontal plane. 1

The manner of use of the invention has practically been explained in theforegoing description and will readily be understood by I those skilledin the art.

What I claim as new, and desire to secure roo by Letters Patent, issl.The combination with a pipe-section having an enlarged end providedinternally with a shoulder and adjacent to said shoulder with Thepipe-section A may be regarded as sub- 6o In one construction em- 65equipped. Assuming the pipe-section A to 7o l cylindrical surface, saidenlarged end being` internally threaded adjacent to said cylindricalsurface, a pipe-section extending into said enlarged end and providednear its inner end with a rigid collar engaging said shoulder, apacking-ring adjacent to said collar, and an externally-threaded annularnut receiving the pipe-section and serving to compress said packing-ringbetween itself and the collar, substantially as and for the purpose setforth.

3. The combination with a pipe-section A, of an elbow connectedtherewith and provided with an enlarged end having an internal shoulderand a cylindrical surface adjacent to said shoulder, a pipe-sectionextending into said enlarged end and provided with a rigid collarengaging said shoulder, a packing-ring adjacent to said collar, anannular nut receiving said pipe section and connected with said enlargedend and serving to compress said packing-ring between itself and saidcollar, and an elbow b connected With the free end of said pipe-section,substantially as and for the purpose set forth.

JOSEPH E. FORSYTH.

In presence o"- D. W. LEE, ALBERT D. BACCI.

